Home / 15,348.69-21,179.48-8,636.63

Finding the Fourth Proportional to 15,348.69, 21,179.48 and 8,636.63

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Solution

The fourth proportional to 15,348.69, 21,179.48 and 8,636.63 is: 11,917.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.69 : 21,179.48 = 8,636.63 : x
  2. Step 2: Convert to fraction form
    15,348.69/21,179.48 = 8,636.63/x
  3. Step 3: Cross multiply
    15,348.69x = 21,179.48 × 8,636.63
  4. Step 4: Simplify right side
    15,348.69x = 182,919,183.27
  5. Step 5: Solve for x
    x = 182,919,183.27/15,348.69
  6. Step 6: Final answer
    x = 11,917.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.